.page { padding: 40px 20px; max-width: 1100px; margin: 0 auto; }
.page h1 { font-size: 26px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.page .subtitle { color: #888; margin-bottom: 20px; font-size: 14px; }

label {
  display: block; font-size: 12px; font-weight: 600; color: #aaa;
  margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.5px;
  margin-top: 10px;
}

.tabs {
  display: flex; gap: 4px; border-bottom: 1px solid #222;
  margin-bottom: 20px;
}
.tab {
  padding: 10px 18px; background: transparent; border: none; color: #888;
  font-size: 14px; font-weight: 500; cursor: pointer; font-family: inherit;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tab:hover { color: #ddd; }
.tab.active { color: #ff4444; border-bottom-color: #ff4444; }

.layout {
  display: grid; grid-template-columns: 1fr 1.5fr; gap: 20px;
}

.controls-col, .preview-col { display: flex; flex-direction: column; gap: 0; }

.panel { display: none; background: #141414; border: 1px solid #262626; border-radius: 12px; padding: 18px; }
.panel.active { display: block; }

input[type=text], input[type=file], select {
  width: 100%; background: #0d0d0d; border: 1px solid #2a2a2a;
  color: #fff; border-radius: 6px; padding: 10px 12px; font-size: 14px;
  outline: none; font-family: inherit;
}
input:focus, select:focus { border-color: #ff4444; }
input[type=color] { width: 56px; height: 34px; padding: 2px; background: #0d0d0d; border: 1px solid #2a2a2a; border-radius: 6px; cursor: pointer; }
input[type=range] { width: 100%; accent-color: #ff4444; }

.panel label input[type=checkbox] { width: auto; margin-right: 8px; accent-color: #ff4444; }
.panel label:has(input[type=checkbox]) {
  display: flex; align-items: center; text-transform: none;
  letter-spacing: 0; font-weight: 500; color: #ddd; font-size: 13px;
}

.seg { display: inline-flex; border: 1px solid #2a2a2a; border-radius: 6px; overflow: hidden; }
.seg-btn {
  background: #141414; border: none; color: #aaa; padding: 7px 14px;
  font-size: 13px; cursor: pointer; font-family: inherit;
}
.seg-btn.active { background: #ff4444; color: #fff; }

.picker { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.picker .epill {
  font-size: 22px; padding: 6px 10px; background: #0d0d0d;
  border: 1px solid #2a2a2a; border-radius: 8px; cursor: pointer;
  transition: all 0.15s;
}
.picker .epill:hover { border-color: #ff4444; }

.preview-row {
  display: flex; gap: 14px; justify-content: flex-start; align-items: flex-end;
  background: #141414; border: 1px solid #262626; border-radius: 12px;
  padding: 20px; margin-bottom: 16px; flex-wrap: wrap;
}
.prev-box { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.prev-box canvas {
  background: repeating-conic-gradient(#1a1a1a 0% 25%, #0a0a0a 0% 50%) 50% / 8px 8px;
  image-rendering: pixelated;
  border: 1px solid #222; border-radius: 4px;
}
#prev-16 { width: 64px; height: 64px; }
#prev-32 { width: 128px; height: 128px; }
#prev-256 { width: 200px; height: 200px; }
.prev-label {
  color: #888; font-size: 11px; font-family: 'SF Mono', Monaco, monospace;
}

.card {
  background: #141414; border: 1px solid #262626; border-radius: 12px;
  padding: 18px; margin-bottom: 16px;
}
.card h3 { color: #fff; font-size: 14px; margin-bottom: 12px; }

.size-list {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
  margin-bottom: 12px;
}
.size-btn {
  padding: 9px 12px; background: #0d0d0d; border: 1px solid #2a2a2a;
  color: #ccc; border-radius: 6px; font-size: 12px; cursor: pointer;
  font-family: 'SF Mono', Monaco, monospace; transition: all 0.15s;
}
.size-btn:hover { border-color: #ff4444; color: #fff; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border: 1px solid #2a2a2a;
  background: #141414; color: #ccc; font-size: 13px; font-weight: 600;
  border-radius: 8px; cursor: pointer; transition: all 0.15s; font-family: inherit;
}
.btn:hover { border-color: #ff4444; color: #fff; background: #1f1f1f; }
.btn-primary { background: #cc0000; border-color: #cc0000; color: #fff; width: 100%; }
.btn-primary:hover { background: #ff1a1a; border-color: #ff1a1a; }

textarea {
  width: 100%; min-height: 90px; resize: vertical;
  background: #0d0d0d; border: 1px solid #2a2a2a; border-radius: 8px;
  color: #e1e1e1; font-size: 12px; padding: 10px 12px; outline: none;
  font-family: 'SF Mono', Monaco, monospace;
  margin-bottom: 10px;
}

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
}